Centroid Community CNC Support Forum

Or can anyone suggest replacement for the lenze speed controller which would be compatible with acorn and drive this motor?
https://inverterdrive.com/group/Servo-M ... sthom-GEC/

martyscncgarage wrote: ↑Mon May 03, 2021 1:11 pm

LenelyWolf wrote: ↑Mon May 03, 2021 1:08 pm

martyscncgarage wrote: ↑Mon May 03, 2021 1:03 pm Look at KB Electronics KBSI240D signal isolator.

Unfortunately not available in UK. Do u know any other option?

No, not in UK

So do u think the one I posted will be good enough? It is expensive like hell so I hope it will

martyscncgarage wrote: ↑Mon May 03, 2021 1:03 pm Look at KB Electronics KBSI240D signal isolator.

Unfortunately not available in UK. Do u know any other option?

I’m gonna buy a new beaglebone which burned and new signal conditioner to get isolation on analog inputs. https://uk.rs-online.com/web/p/signal-conditioning/8842458/ Can anyone please provide me with some links and video how to quickly flash and synchronise the beaglebone with acorn? I want to get r...

I'm concerned your spindle de ve does not provide isolation on the analog inputs. I have seen drives with no signal isolation blow up Acorns. You should call Lenze and leave the analog signal disconnected until you know for sure. Actually I believe that is the main reason for the fireworks and also...

Yeah I also thought so.. i just wanted to confirm that. I don’t want another fireworks on my acorn

Yeah main reason to wait for the spindle to stop was to be able to rigid tap on the machine

Ok... so I get stuck here... I get 0v between ground and ethernet casing with everything connected apart from analog output from acorn to the dc drive. Once the analog output is connected I get 90V between ethernet casing and ground... I’ve checked all grounding and it looks ok. What else should i c...

Oh ok.. that is what i didn’t know... i thought it will be easier for other users with the same problem just to look for the problem rather then listing through thousand pages on one single thread... sorry for that.. I will do that in a future. Thanks for the schematic.. will look into it right afte...

You'd hope for the 19V PSU to be floating WRT ground. 94V sounds rather a lot, so you'd want to be concerned about what's causing it, not least if it can frazzle your Acorn. If it has enough oomf to can damage the Acorn, it could be hazardous to you. You should have good hard protective earth conne...